66 lines
1.8 KiB
Groff
66 lines
1.8 KiB
Groff
.title ASEAWK
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== ASEAWK ==
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ASE provides an embeddable processor of a dialect of the AWK programming language. The language implemented is slightly different from {the version developed by Brian W. Kernighan, http://cm.bell-labs.com/cm/cs/awkbook/index.html} and has been adjusted to the author's preference.
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Embedding a processor requires the following basic steps.
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[[[
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* Create a processor instance
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* Parse an AWK script
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* Run the script parsed
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* Destroy the instance
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]]]
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The following code fragment illustrates the basic steps.
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{{{
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1) #include <ase/awk/awk.h>
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2) ase_awk_t* awk;
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3) awk = ase_awk_open (...);
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4) if (ase_awk_parse (awk, ...) == -1)
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{
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/* parse error */
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}
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else
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{
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5) if (ase_awk_run (awk, ...) == -1)
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{
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/* run-time error */
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}
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}
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6) ase_awk_close (awk);
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}}}
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(((
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* Most of the functions and data types needed are defined in the header file <ase/awk/awk.h>.
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* ase_awk_t represents the processor. However, the internal representation is not exposed.
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* ase_awk_open creates the processor instance.
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* ase_awk_parse parses an AWK script.
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* ase_awk_run executes the script parsed.
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* ase_awk_close destroys the processor instance.
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)))
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=== Primitive Functions ===
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ase_awk_open requires a set of primitive functions to be passed. This set include pointers to the system primitive functions for system dependent operation such as memory allocation, string formatting, etc.
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=== Source IO Handler ===
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ase_awk_srcio_t
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The source code is read in with the source input handler provided.
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The optional source output handler writes the generated source code.
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=== External IO Handler ===
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ase_awk_extio_t
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External IO handlers should be provided to support the AWK's built-in IO facilities.
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=== Reference Manual ===
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[[[
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* {Reference Manual,awk-ref-en.html}
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]]]
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